drivers/gpu/drm/nouveau/dispnv04/disp.c

   1 /*
   2  * Copyright 2009 Red Hat Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Author: Ben Skeggs
  23  */
  24
  25 #include <drm/drmP.h>
  26 #include <drm/drm_crtc_helper.h>
  27
  28 #include "nouveau_drv.h"
  29 #include "nouveau_reg.h"
  30 #include "hw.h"
  31 #include "nouveau_encoder.h"
  32 #include "nouveau_connector.h"
  33
  34 #include <nvif/if0004.h>
  35
  36 static void
  37 nv04_display_fini(struct drm_device *dev)
  38 {
  39         struct nv04_display *disp = nv04_display(dev);
  40
  41         /* Disable flip completion events. */
  42         nvif_notify_put(&disp->flip);
  43
  44         /* Disable vblank interrupts. */
  45         NVWriteCRTC(dev, 0, NV_PCRTC_INTR_EN_0, 0);
  46         if (nv_two_heads(dev))
  47                 NVWriteCRTC(dev, 1, NV_PCRTC_INTR_EN_0, 0);
  48 }
  49
  50 static int
  51 nv04_display_init(struct drm_device *dev)
  52 {
  53         struct nv04_display *disp = nv04_display(dev);
  54         struct nouveau_encoder *encoder;
  55         struct nouveau_crtc *crtc;
  56
  57         /* meh.. modeset apparently doesn't setup all the regs and depends
  58          * on pre-existing state, for now load the state of the card *before*
  59          * nouveau was loaded, and then do a modeset.
  60          *
  61          * best thing to do probably is to make save/restore routines not
  62          * save/restore "pre-load" state, but more general so we can save
  63          * on suspend too.
  64          */
  65         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head)
  66                 crtc->save(&crtc->base);
  67
  68         list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.base.head)
  69                 encoder->enc_save(&encoder->base.base);
  70
  71         /* Enable flip completion events. */
  72         nvif_notify_get(&disp->flip);
  73         return 0;
  74 }
  75
  76 static void
  77 nv04_display_destroy(struct drm_device *dev)
  78 {
  79         struct nv04_display *disp = nv04_display(dev);
  80         struct nouveau_drm *drm = nouveau_drm(dev);
  81         struct nouveau_encoder *encoder;
  82         struct nouveau_crtc *nv_crtc;
  83
  84         /* Restore state */
  85         list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.base.head)
  86                 encoder->enc_restore(&encoder->base.base);
  87
  88         list_for_each_entry(nv_crtc, &dev->mode_config.crtc_list, base.head)
  89                 nv_crtc->restore(&nv_crtc->base);
  90
  91         nouveau_hw_save_vga_fonts(dev, 0);
  92
  93         nvif_notify_fini(&disp->flip);
  94
  95         nouveau_display(dev)->priv = NULL;
  96         kfree(disp);
  97
  98         nvif_object_unmap(&drm->client.device.object);
  99 }
 100
 101 int
 102 nv04_display_create(struct drm_device *dev)
 103 {
 104         struct nouveau_drm *drm = nouveau_drm(dev);
 105         struct nvkm_i2c *i2c = nvxx_i2c(&drm->client.device);
 106         struct dcb_table *dcb = &drm->vbios.dcb;
 107         struct drm_connector *connector, *ct;
 108         struct drm_encoder *encoder;
 109         struct nouveau_encoder *nv_encoder;
 110         struct nouveau_crtc *crtc;
 111         struct nv04_display *disp;
 112         int i, ret;
 113
 114         disp = kzalloc(sizeof(*disp), GFP_KERNEL);
 115         if (!disp)
 116                 return -ENOMEM;
 117
 118         nvif_object_map(&drm->client.device.object, NULL, 0);
 119
 120         nouveau_display(dev)->priv = disp;
 121         nouveau_display(dev)->dtor = nv04_display_destroy;
 122         nouveau_display(dev)->init = nv04_display_init;
 123         nouveau_display(dev)->fini = nv04_display_fini;
 124
 125         /* Pre-nv50 doesn't support atomic, so don't expose the ioctls */
 126         dev->driver->driver_features &= ~DRIVER_ATOMIC;
 127
 128         /* Request page flip completion event. */
 129         if (drm->nvsw.client) {
 130                 nvif_notify_init(&drm->nvsw, nv04_flip_complete,
 131                                  false, NV04_NVSW_NTFY_UEVENT,
 132                                  NULL, 0, 0, &disp->flip);
 133         }
 134
 135         nouveau_hw_save_vga_fonts(dev, 1);
 136
 137         nv04_crtc_create(dev, 0);
 138         if (nv_two_heads(dev))
 139                 nv04_crtc_create(dev, 1);
 140
 141         for (i = 0; i < dcb->entries; i++) {
 142                 struct dcb_output *dcbent = &dcb->entry[i];
 143
 144                 connector = nouveau_connector_create(dev, dcbent);
 145                 if (IS_ERR(connector))
 146                         continue;
 147
 148                 switch (dcbent->type) {
 149                 case DCB_OUTPUT_ANALOG:
 150                         ret = nv04_dac_create(connector, dcbent);
 151                         break;
 152                 case DCB_OUTPUT_LVDS:
 153                 case DCB_OUTPUT_TMDS:
 154                         ret = nv04_dfp_create(connector, dcbent);
 155                         break;
 156                 case DCB_OUTPUT_TV:
 157                         if (dcbent->location == DCB_LOC_ON_CHIP)
 158                                 ret = nv17_tv_create(connector, dcbent);
 159                         else
 160                                 ret = nv04_tv_create(connector, dcbent);
 161                         break;
 162                 default:
 163                         NV_WARN(drm, "DCB type %d not known\n", dcbent->type);
 164                         continue;
 165                 }
 166
 167                 if (ret)
 168                         continue;
 169         }
 170
 171         list_for_each_entry_safe(connector, ct,
 172                                  &dev->mode_config.connector_list, head) {
 173                 if (!connector->encoder_ids[0]) {
 174                         NV_WARN(drm, "%s has no encoders, removing\n",
 175                                 connector->name);
 176                         connector->funcs->destroy(connector);
 177                 }
 178         }
 179
 180         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 181                 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 182                 struct nvkm_i2c_bus *bus =
 183                         nvkm_i2c_bus_find(i2c, nv_encoder->dcb->i2c_index);
 184                 nv_encoder->i2c = bus ? &bus->i2c : NULL;
 185         }
 186
 187         /* Save previous state */
 188         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head)
 189                 crtc->save(&crtc->base);
 190
 191         list_for_each_entry(nv_encoder, &dev->mode_config.encoder_list, base.base.head)
 192                 nv_encoder->enc_save(&nv_encoder->base.base);
 193
 194         nouveau_overlay_init(dev);
 195
 196         return 0;
 197 }